|Mesoscale Discussion 1023|
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Mesoscale Discussion 1023
NWS Storm Prediction Center Norman OK
0936 PM CDT Tue Jun 13 2017
Areas affected...Portions of north-central KS into eastern
NE...western/central IA...and far northwestern MO
Concerning...Severe Thunderstorm Watch 325...
Valid 140236Z - 140330Z
The severe weather threat for Severe Thunderstorm Watch 325
SUMMARY...Damaging winds and large hail will continue to be the main
threats with ongoing storms across WW 325. A downstream watch into
more of IA appears unlikely at this time.
DISCUSSION...A bowing line of convection has produced numerous
measured 60-75 mph wind gusts as it has moved across eastern NE over
the past several hours. Recent radar imagery from KOAX depicts
outflow surging ahead of this line of storms as it approaches and
crosses the NE/IA state line. Instability remains favorable for
maintenance of this line for the next hour or so, as MLCAPE of
2500-3000 J/kg resides immediately downstream. However, increasing
convective inhibition noted on 02Z mesoanalysis into western/central
IA should act to weaken ongoing convection as it moves eastward.
While isolated damaging winds may occur for a brief period to the
east of the WW 325, downstream watch issuance into more of
western/central IA is unlikely at this time. Farther to the
southwest across south-central NE and north-central IA, a cluster of
supercells persists in producing large hail of 1-1.5 inches in
diameter. This activity may continue for several more hours given a
favorable thermodynamic and kinematic environment.
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 39169951 39889949 40459839 41479733 42189685 42199512
42039481 41519443 40849453 40589499 39999649 38659782
38719895 39179895 39169951
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